This appears to be an image in gouache on top of some kind of waxy scratchboard, measuring 10" by 14" (17" by 20 3/4" as framed), signed at lower left "DE GUST" and dated there "59". I can't find a listing for the artist but he or she painted in a classic style pioneered by the likes of Jean Le Mayeur and others in the history of modern Indonesian art. The painting is in excellent condition, and is ready for the wall in its simple black frame and clean mat. .